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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bump FL sizing and measurements
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<blockquote data-quote="bigedp51" data-source="post: 1787149" data-attributes="member: 28965"><p>In one of the previous postings, they told you to get a set of Redding competition shell holders to control the amount of shoulder bump. These shell holders do not push the case as far into the die as a standard shell holder, meaning less shoulder bump. And you do not need to touch the die to adjust the amount of shoulder setback, you just change shell holders.</p><p></p><p>You can do the same thing by placing different thickness feeler gauges between the die and shell holder. Start with a .010 feeler gauge and full length resize a case and see if it will chamber without resistance. Keep going to a thinner feeler gauge until the bolt closes with no resistance and you have .001 to .002 head clearance.</p><p></p><p><img src="https://i.imgur.com/7FfXhJ7.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://i.imgur.com/HK76WCp.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>And remember resizing the case and reducing its diameter makes the shoulder move forward until the die is adjusted down far enough to push the shoulder back down.</p><p></p><p><img src="https://i.imgur.com/wm05ArY.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1787149, member: 28965"] In one of the previous postings, they told you to get a set of Redding competition shell holders to control the amount of shoulder bump. These shell holders do not push the case as far into the die as a standard shell holder, meaning less shoulder bump. And you do not need to touch the die to adjust the amount of shoulder setback, you just change shell holders. You can do the same thing by placing different thickness feeler gauges between the die and shell holder. Start with a .010 feeler gauge and full length resize a case and see if it will chamber without resistance. Keep going to a thinner feeler gauge until the bolt closes with no resistance and you have .001 to .002 head clearance. [IMG]https://i.imgur.com/7FfXhJ7.jpg[/IMG] [IMG]https://i.imgur.com/HK76WCp.jpg[/IMG] And remember resizing the case and reducing its diameter makes the shoulder move forward until the die is adjusted down far enough to push the shoulder back down. [img]https://i.imgur.com/wm05ArY.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bump FL sizing and measurements
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